diff --git a/YLErpDAL/Modules/TradeModule/TradeOAService.cs b/YLErpDAL/Modules/TradeModule/TradeOAService.cs
index c93716f0..81d75378 100644
--- a/YLErpDAL/Modules/TradeModule/TradeOAService.cs
+++ b/YLErpDAL/Modules/TradeModule/TradeOAService.cs
@@ -262,6 +262,20 @@ namespace YLErp.Modules.TradeModule
 
                 //通过UserName找到LoginName
                 var applicantLoginName = DbContextFactory.GetErpBaseContext().SystemUsers.Where(u => u.Name == UserInfo.UserName).Select(u => u.LoginName).FirstOrDefault();
+                // 构建detailList，yycl（应用场景/附件）放在明细列表中
+                var detailList = new List<object>();
+                if (attachmentDataList != null && attachmentDataList.Any())
+                {
+                    foreach (var att in attachmentDataList)
+                    {
+                        detailList.Add(new
+                        {
+                            detailIndex = 1,
+                            yycl = att
+                        });
+                    }
+                }
+
                 // 构建dataMap
                 var dataMap = new
                 {
@@ -295,8 +309,7 @@ namespace YLErp.Modules.TradeModule
                     //是否签订廉洁协议 0已签　1未签　2无需签订
                     htbjjs = $"我司与{trade.ClientName}已完成NAFMII协议签署，并开展TRS交易：{contractCode}，参与标的{trade.UnderlyingCode} {trade.UnderlyingName}，参与标的数量面额{trade.OriginalStockEqvNotional}元人民币",
                     //合同背景介绍
-                    // 使用附件数据列表（包含 annexId 和 annexName）
-                    yycl = attachmentDataList?.FirstOrDefault(),
+                    detailList = detailList.Any() ? detailList : null,
                     creater = applicantLoginName
                 };